Brick-machine



Np. 607,856. I

J. N. KAUFHOLZ.

BRICK MACHINE.

(Application filed Aug. 17, 1895.)

(No Model.) 4 Sheets-Shut I.

Patented July 26, 1898.

L I I i 711 E I i i i i 2E3 hi i y a an H W I V I E E I T Q u i i I I l I w Iv jar/en To No. 607,856. Patented July 26, I898. J. N. KAUFHOLZ.

BRICK MACHINE.

(Application filed Aug. 17, 1 895.) (N 0 M o d e l 4 Sheets-Sheet 3. 7

MQzeweo f zz Jena,

No. 607,856. Patented July 26, I898.

J. N. KAUFHOLZ.

BRICK MACHINE.

(Application filed Aug. 17, 1895.) (N o M 0 d el 4 Sheets-Sheet 4.

Nirnn JOHN N. KAUFHOLZ, OF CLEVELAND, OHIO.

BRICK-MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 607,856, dated July 26, 1898.

Application filed August 1'7, 1895. Serial No. 559,696. (No model.)

To all whom it may concern:

Be it known that 1, JOHN N. KAUFI-IOLZ, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Brick-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in brick-machines; and it consists in certain features of construction and combinations of parts hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of a machine embodying my invention, portions being broken away in said figure to reduce the size of the drawing and to more clearly show the construction. Fig. 2 is a top plan of the machine in section 011 line 2 2, Fig. 1. Figs. 3, 4, and 5 are elevations, partly in vertical section, of a portion of the machine, showing, among other things, the plunger for compressing the brick from above and the movable mold-bottom for compressing the brick from below, whereby the brick is re-pressed before itis discharged from the machine. The line of section in said Figs. 3, 4, and 5 is concentric or approximately concentric with the axis of mold wheel D and through one or more of the molds of said wheel. I11 Fig. 3 said plunger in dotted lines is shown in its elevated or uppermost position and in solid lines is shown flush with the top edges of the mold and engaging the upper surface of the brick .to be re-pressed, and the movable bottom of the mold containing the brick is shown in position preparatorytothe reception of its downward movement required to accommodate the entrance of the plunger into the mold-chamber occupied by the brick requiring re-pressing, and in Fig. 4. the plunger is shown in position after having somewhat entered the mold-chamber and the movable bottom of the mold is shown in position preparatory to its compression of the brick from below. Fig. 5 illustrates the position of the plunger after the completionof its compressing stroke and also illustrates the position of the movable mold-bottom upon said bottoms compression of the brick from below. Fig. 6 is an elevation, mostly in vertical section, on

line 6 6, Fig. 2, illustrating follower O and connecting mechanism for operating said follower. Fig. 7 is a top plan of the auger-case, lever'R, and cam-wheel r, and in this figure portions are broken away and in section. Fig. 8 is a side elevation of cam-wheel r and the two rollers with which lever R is provided and that are adapted to be engaged by the different cams, respectively, of said wheel.

My improved machine comprises an upright anger or bladed shaft A, that is suitably supported within an upright case B. (See Figs. 1 and 2.) Case B at its lower end is rigidly secured in any approved manner to the top portion of the stationary framework C of the machine. Case B at one side and at or near its upper end is provided with a lateral opening B for receiving the clay to be tempered by the anger or bladed shaft within said case, and the blades a of said shaft are suitably arranged to feed the clay being tempered down case B, that is open at its lower end and at said end is adapted to communicate with the mold-chambers (l of the horizontally-arranged mold-wheel D, that is suitably supported below and in suitable proximity to the upper portion of the stationary framework of the machine. A spur-gear A is operatively mounted upon the upper end of shaft A, and

said gear meshes with and is driven by the pinion E, operatively mounted upon the upper end of a suitably-supported upright shaft E, arranged outside of case B. Shaft E extends to near the lower end of the stationary framework of the machine, and a bevel-gear e is operatively mounted upon the lower end of said shaft E. and is driven by a pinion f, operatively mounted upon a horizontally-arranged driving-shaft F, that is provided with a drivingpulley F, to which power is applied in any approved manner. Shaft E adjacent to moldwheel D is provided with a pinion E ,'that meshes with and drives the spur-gear D formedupon the peripheral surfaceof the mold-wheel. The mold whee1 is shown resting and is adapted to revolve upon rollers or wheels G, that are arranged at suitable intervals at the under side and next to the periphery of said wheel and are suitably supported from standards g, that are rigid with the platform g, suspended in any approved manner Bevel-gear e meshes with from the upper portion of the stationary framework of the machine, preferably by means of rods g ,depending from said portion of the stationary framework and suitably secured at their upper ends to said framework and at their lower ends to the aforesaid standards.

Mold-wheel D is provided with any suitable number of molds d,and the latter are arranged radially to the axis of said wheel and equal distances apart in an annular path that is concentric with said axis, as shown in Fig. 2.

c The chamber of each mold is provided with a vertically-movable bottom 61, shaped to nicely fit the mold internally. The downward movement of said bottom cl is limited by a stop that consists, preferably, of any suitable number of stationary pins or upwardly-proj ectin g members I, provided below the bottom and adapted to be engaged by the under side of the bottom when the latter is in its lowermost position. The arrangement of the upright case B is such relative to the mold-wheel that, as already indicated, the compartments of said wheel shall, during the rotation of the latter, pass in under the discharging-opening of said case. Case B at its lower end and at one side and preferably at that side in the direction of which the mold-wheel rotates is provided with a door for access to or inspection of the interior of the lower end of said case.

A cut-off K (see also Figs. 3, 4, and 5) is provided at the discharging end of the augercase and at that side of the case in the direction of which the mold-wheel rotates. Said cut-off is stationary and arranged radially or approximately radially to the axis of the moldwheel and is long enough to bridge the molds of the mold-wheel lengthwise. Cut-off K is located next above the upper surface of the mold-wheel and over the annular-path in which the molds of said wheel revolve. The arrangement of parts is therefore such that each mold of the moldwheel d urin g its revolution passes under the discharging end of the auger-case, and the clay received by said mold as the latter traverses below the auger-case is cut off from the clay-supply by means of member K when the mold traverses the under side of said outoff. Member K consists, preferably, of a plate undercut somewhat at its inner longitudinal edge, as at K, and resting upon the mold-wheel, and in the case illustrated said plate is shown held down upon said wheel by screws K that engage correspondin gly-screwthreaded holes in a flange formed upon the lower end of door B Out-off K is prevented from movement with the mold wheel by means of an upright plate K that engages the outer longitudinal edge of the cut-off and is removably secu red to the door B by means of screws or bolts K Plate or cut-off K is preferably not as wide, however, as the molds, 'so that the advancing or forward side of a mold as a mold moves under the cut-off shall have passed beyond and exposed its contents at the outer side of the cut-off before the rearward or following side of the mold shall have been cut off from the supply of clay within the auger-case. An important function of cut-off K is to compact the clay uniformly in all parts of the mold and so that the forward or advancing side of the mold is filled as completely as the rearward or followingside of the moldthat is, by the construction hereinbefore described, wherein plate K is narrower than the width of the molds, as already indicated, a mold during its revolution and during its passage under said plate will appear at the out-er longitudinal edge of the plate before communication between the mold and the source of clay-supply has been interrupted, and the result is the material in the forward or advancing portion of the mold as the latter appears at the outer longitudinal edge of the mold during the revolution of the latter will be free to rise more or less and permit more material being crowded into said portion of the mold by the pressure of the material crowd ed into the rearward or opposite side of the mold, and hence the brick formed in the mold has a uniform or approximately uniform density throughout its entire width.

Suitable means should be provided for regulating the depth of the chambers of the molds as the latter revolve in under the auger-case, and to this end each mold-bottom (1 upon its under side and central portion is shown provided with adepending stem d that extends downwardly a suitable distance and whose lower end as the respective mold moves in under the discharging end of the auger-case rides up an incline L (see-Figs. 1, 3, and 5) of a horizontally-arranged bar or guide L, that is secured in any approved manner to the stationary framework of the machine a suitable distance below the discharging end of the auger-case. Hence by the construction just described any variation in the depths of the different holes made in the moldwheel for the formation of the molds or any variation in the height of the stops employed for limiting the downward movement of-the movable bottoms of the molds is immaterial; but by the employment of guide or gage L it is merely necessary that the movable bottoms of the different molds and their depending stems shall measure the same distance between the upper surface of the bottom and lower extremity of the depending stem.

In the manufacture of what is known as common brick it is merely necessary to force the clay into the molds of the rotating moldwheel and then elevate the movable bottoms of the molds at any suitable point to accomodate the removal of the bricks therefrom. Suppose that the point at which it is desired to remove the bricks from the molds is located diametrically opposite or approximately opposite the point at which the molds are charged. A stationary incline M, (see Figs. 1 and 2,) that is adapted to be engaged by the depending stems of the movable bottoms of the molds during the revolution of said stems, is constructed in any approved manner and arranged at any suitable point between cut-oif K and the place at which it is desired to remove the bricks from the molds. The trend of said incline is upward in the direction in which said stems revolve, and the incline is arranged in the path of the lower extremities of the stems and so that the lower end of the incline will be engaged by the stems when the latter reach the incline, and said stems shall, duringtheir revolution, pass up the aforesaid incline, and thereby elevate the connected bottom of the respective mold above, and thereby lift the brick from within the mold. The upper end of the incline terminates in a horizontally-arranged guide m,

constructed in any approved manner, which guide receives the revolving depending stems of the movable mold-bottoms from the incline, and the arrangement of parts is such that when the depending stem of the movable bottom of a mold shall, during its revolution, have arrived upon said guide m the connected movable bottom shall have been elevated flush with the upper extremity of the mold, as shown in Fig. 6, and shall have elevated the brick thereon flush with the upper surface of the mold-wheel, so that said brick can be readily removed by hand or otherwise, and guide m extends to and in under the point at which it is desired to remove the brick from the mold. I have devised means or mechanism for automatically removing the bricks from the movable bottoms of the molds when said bottoms have been elevated flush with the upper surface of the mold-wheel and have arrived at the place at which it is desired to remove the bricks therefrom, and the mechanism shown for the purpose comprises an upright follower O, that in its normal position is arranged above the upper surface of the mold-wheel at the inner side of the annular path along which the molds of said wheel revolve.

Follower O is shown rigid with the depending arm of a bell-crank lever 0, (see Figs. 1, 2, and 6,) that is fulcrumed at O to a bracket 0, rigidly secured to an upright stationary pin C The horizontally arranged or approximately horizontally-arranged and rearwardly-extending arm of said lever, at its rear end, is operatively connected, by means of a depending link 0 with the inner end of a vertically-tilting lever P, that is fulcru med at or near its central portion, as at P, to an upright post orstandard C rigid with the stationary framework of the machine. Link 0 at its upper end has a shoulder 0 engaging the upper side of the engaging arm of the bell-crank lever, and at its lower end is provided with a shoulder 0 that engages the under side of tilting lever P, and levers O and P are suitably slotted or perforated, as shown in Fig. 6, to accommodate the extension therethrongh of the link.

By the construction just described it will be observed that bell-crank lever 0 will be moved to actuate follower O forwardly upon tilting lever P in the direction required to lower link 0 Follower 0 upon its forward actuation engages the brick that shall have been elevated forward of the follower, as shown in dotted lines, Fig. 6, and discharges the brick from the mold-wheel. A spring acts in the direction to retain the follower in its normal position, said spring (see Fig. 6) being shown secured at one end to the depending arm of lever O and suitably attached at its opposite end to the under side of bracket 0. Lever P at its outer end is provided with a foot P, the upper side whereof is adapted to be engaged by a lug or projection Q, formed upon a plunger Q, that is provided with a pressure-surface Q adapted to fit into the molds of the mold-wheel, and a suitable distance from its pressure-surface is provided with any suitable number of shoulders Q adapted to engage the upper surface of the mold-wheel in the lowermost position of the plunger and thereby constitute a stop to limit the compressing stroke of said plunger. Plunger Q is connected by means of a ball-andsocket joint Q with an upright rod or bar Q that extends upwardly to the upper end of the auger-case, and at its upper end is connected by means of a ball-and-socket joint Q with one end of a vertically-tilting lever B, that is fulcrumed at its central portion, as at R, to the upper end of said case, and at its opposite end is provided with two rollers R and R arranged the one above the other and a suitable distance apart, as shown in Figs. 1, 7, and S, and adapted to engage different cams r W, respectively, formed upon the upper face and lower face, respectively, of a cam-Wheel 7, that is operatively connected with the upper end of shaft E. The trend of the upper cam r is such that the roller-bearing tilting lever, upon the engagement of its upper roller by said cam, shall be actuated in the direction required to depress or lower the plunger, and the trend of the lower cam r is such that the roller-bearing tilting lever shall, upon the engagement of its lower roller by said cam r be actuated in the direction required to elevate the plunger, and the upper cam r is arranged in advance of the lower cam r so that the plunger shall be elevated from within the engaging mold after the compressin g stroke of the plunger. Plunger Qis therefore, it will be observed, adapted to compress the brick from above, and the parts are so arranged and timed that the mold of the mold-wheel shall have arrived at the place where the plunger is adapted to enter the molds preparatory to the compressing stroke of the plunger-that is, the number of teeth upon gear-wheel E shall be such relative to the number of teeth of gear D on the mold-wheel that the moldwheel shall be rotated a distance equal to the distance between the centers of two adjacent molds during each rotation of shaft E, by which construction the molds, during the operation of the machine, will arrive successively and at the proper time at the place required for the reception of plunger Q-and the arrangement of the cam instrumental in effecting the compressing stroke of the plunger is such relative to the operation of the mold-wheel that said plunger shall effect its compressing stroke immediately upon the arrival of a mold at the place required for the reception of the plunger. The arrangement of parts is, furthermore, such that lug or projection Q on the plunger shall, during the compressing stroke of the plunger, idly trip tilting lever P and move below the foot at the outer end of said lever. The peculiar connection of the inner end of said lever with the rearwardly-extending arm of the bell-crank lever accommodates said tilting of lever P without actuating the brick-discharging device; but the aforesaid lug or projection upon the plunger will, it is obvious, upon the elevation of the plunger after the compressing stroke engage the under side of the foot at the outer end of the tilting lever and actuate said lever in the direction required to operate the brick-discharging device. Plunger Q is provided with an upwardly-projecting tubular member or sleeve Q ,(see Figs. 2 and 5,) that easily embraces the lower end of rod or bar Q and affords bearing for an eye or sleeve S, formed upon the outer end of an arm or lever S, that is fulcrumed upon pin 0 and is arranged horizontally and radially of the mold-wheel. The bore Q of the upwardly-projecting sleeve or tubular portion of the plunger is sufficiently larger in diameter than the plunger-bearing rod or bar as to accommodate the lateral movement of said bar or rod during the horizontal oscillation or Vibration of arm or lever S. Plunger Q is revolved with the mold-wheel during its compressing stroke, and the means for automatically establishing operative connection between the plunger and mold-wheel preparatory to the compressing stroke of the plunger is preferably as follows: The mold-wheel upon its periphery and at equal intervals is provided with outwardly projecting lugs D The mold-wheel is provided with as many lugs or projections D as it has molds d, and said lugs or projecting members are located an equal distance in advance of the different molds, respectively. The plunger is provided with a depending member Q that projects downwardly into the path of the aforesaid lugs or projecting members of the moldwheel and is adapted to be engaged by said projecting members of the mold-wheel during the rotation of the latter, and the arrangement of parts is such that said depending member of the plunger shall be engaged by a lug or projecting member D of the moldwheel immediately preparatory to the compressing stroke of the plunger and thereupon actuate or revolve the plunger with the moldwheel during said stroke of the plunger.

Suitable means for automatically returning the plunger upon its elevation from the mold after its compressing stroke to the place at which the plunger is adapted to enter the molds is provided, and consists, preferably, of an oscillating shaft T, that is suitably supported from the stationary framework of the machine, and is provided with an upwardlyprojecting arm or lever T, that at its outer end bears a roller T engaging the outer surface of the outer end or sleeve S of the horizontally oscillating or vibrating lever S. Shaft T is also provided with a depending arm T adapted to be engaged by the aforesaid peripheral lugs or projecting members D of the mold-wheel, and the arrangement of parts is such that arm or lever T of shaft T shall during the revolution of the plunger with the mold-wheel during the compressing stroke of the plunger be actuated in the direction required to move the depending arm of said shaft toward the lug or projecting member D, adjacent to the mold engaged by the plunger, and the arrangement of parts is, furthermore, such that when the plunger has been elevated from within the mold after its compressing stroke and its depending member Q disengaged from said lug or projecting member D of the mold-wheel depending arm T of oscillating shaft T shall be engaged by said member D of the mold-wheel, resulting in the actuation of shaft T and its upwardly-extending arm T in the direction re quired to cause said arm to actuate arm or lever S, and consequently the plunger, to the place at which the plunger is adapted to enter the molds.

Member L is of course arranged concentrically with the center of revolution of stems d of the mold-bottoms, and at its delivering end terminates in a downwardly-extending incline L and said downwardly-extending incline is so arranged relative to the point at which the plunger enters the molds and the parts are so timed that the plunger shall enter the mold while the bottom of said mold descends, and a suitably-supported wheel or roller U is arranged at the lower extremity of incline L and adapted to receive the depending stems of the mold-bottoms from said incline. Roller or wheel U is so arranged relative to the upper surface of member L that the upper extremity of said wheel shall extend above member L, and the periphery of said roller or wheel between incline L and the upper extremity of the wheel shall be located in the path of the lower extremity of the aforesaid stems, by which construction the revolving stems of the mold-botto ms upon leaving incline L will engage the periphery of wheel U and ride upon said periphery to the upper extremity of said wheel, thereby resulting in the elevation of the mold-bottom and in the compression of the brick from below.

What I claim is- 1. In a brick-machine,the combination with a suitably actuated horizontally arranged mold-wheel provided with any suitable number of molds for the formation of brick therein and which molds have vertically-movable bottoms, and means for automatically elevating the mold-bottoms to bring the upper surface thereof flush with the upper surface of the mold-wheel, of the verticallyetilting follower 0 adapted to engage and discharge the brick from the mold-wheel, suitably-actuated lever mechanism for operating the follower, and means acting to retain the follower in its normal or inoperative position, all arranged and operating substantially as shown, for the purpose specified.

2. In abrick-machine,the combination with a suitablyactuated horizontallyarranged mold-wheel provided with any suitable number of molds for the formation of brick therein and which molds have vertically-movable bottoms, and means for automatically elevating the mold-bottoms to bring the upper surfaces thereof flush with the upper surface of the mold-wheel, of the follower O, verticallytilting bell-crank lever O, and suitably-actuated mechanism for actuating said bell-crank lever in the direction required to operate the follower, and means acting to retain the follower in its normal or inoperative position,

' substantially as shown, for the purpose speci- 8. In abrick-machine, the combination with a revolving mold and means for forcing the clay into said mold, of a suitably-actuated plunger for re-pressing the brick within the mold during the revolution of the mold,means for revolving the plunger with the mold during the compressing stroke of the plunger, and means for returning the plunger to the place of beginning after its compressing stroke, substantially as set forth.

4. In a brick-machine,the combination with a suitably actuated revolving mold whose bottom is movable vertically and provided with a depending stem, and means for forcing the clay into the mold, of a suitably-actuated plunger for compressing the brick from above during the revolution of the mold, means for revolving said plunger with the mold during the compressing stroke of the plunger, means for returning the plunger to the place of beginning after its compressing stroke, the horizontally-arran ged bar or guide L and the contiguous inclines L, L and the roller or wheel U, all arranged and operating substantially as shown, for the purpose speciing stroke of the plunger, and means for elevating the plunger from within the mold and returning it to its place of beginning after the compressing stroke of the plunger, all arranged and timed to operate substantially as shown, for the purpose specified.

6. In a brick-machine,the combination with a suitablyactuated horizontallyarranged mold-wheel provided with any suitable number of radially-arranged molds located in an annular path that is concentric with the axis of the wheel, said mold-Wheel, a suitable distance in advance of each mold, being provided with a laterally and outwardly projecting lug D", of a vertically reciprocating plunger adapted to enter the molds of the mold-wheel at a given point from above, being adapted to revolve with the mold during its compression of the brick, and being provided with the depending member Q", means for effecting the downward or compressing stroke of the plunger during the rotation of the moldwheel, and means for elevating the plunger and returning it to its place of beginning after its compressing stroke, all arranged and timed to operate substantially as shown, for the purpose specified.

' 7. Inabrick-machine,the combination with a suitably actuated horizontally arranged mold-wheel provided with any suitable numannular path that is concentric with the axis of-said wheel and provided a suitable distance in advance of each mold with a laterally and outwardly projecting lug D of a vertically-reciprocating plunger Q provided with a pressure-surface Q any suitablev number of shoulders Q and depending member Q; arm or lever S pivoted or fulcrumed at the central portion of the mold-wheel, and at its outer end connected with the plunger; suitable means for effecting the downward or compressing stroke of the plunger; suitable means for'elfecting the upward movement of the plunger after its compressing stroke; oscillating shaft T provided with an upwardlyprojecting roller-bearing arm or lever T and with a depending arm or lever T all arranged and timed to operate substantially as shown, for the purpose specified.

8. In abrick-machine,the combination with a suitably-actuated revolving mold and a plunger adapted to revolve with and enter the mold from above, of a vertically-tilting lever fulcrn med at any suitable elevation above the plunger, means operatively connecting one end of said lever with the plunger, mechanism for actuating the opposite end of the le-' ver in the direction required to effect the downward or compressing stroke of the plunger, means for actuating the lever in the 0p posite direction, means for moving the plunger with the mold during the'compressing stroke, and means for returning the plunger to its place of beginning upon its elevation from the mold, all arranged and operating substantially as and for the purpose set forth.

.ber of radially-arranged molds located in an 9. In a brick-machine,the combination with a suitably actuated revoluble mold and a plungeradapted to revolve with and enter the mold from above, of a vertically-tilting lever fulcru med at any suitable elevation above the plunger, means operatively connecting one end of said lever with the plunger, a suitablyactuated cam for actuating the opposite end of the lever in the direction required to effect the downward or compressing stroke of the plunger, a suitably-actuated cam for actuating the lever in the opposite direction, means i for moving the plunger with the mold during its compressing stroke, and means for returning the plunger to its place of beginning upon its elevation from the mold, substantially as shown, for the purpose set forth.

10. In a brick-machine, the combination with a suitablvactuated mold and a plunger adapted to revolve with and enter the mold from above, of a vertically-tilting lever fulcrumed at any suitable elevation above the plunger, and a rod or bar operatively connected at one end by means of a ball-andsocket joint with the plunger and operatively connected, at its opposite end, by means of a ball-and-socket joint, with one end of said lever, mechanism for engaging and actuating the opposite end of the lever in the direction required to effect the downward or compressing stroke of the plunger, means for actuating the lever in the opposite direction, means for moving the plunger with the mold during the compressing stroke, and means for returning the plunger to its place of beginning upon its elevation from the mold, substantially as shown, for the purpose specified.

11. In a brick-machine, the combination of a horizontally-arranged mold-wheel D provided with any suitable number of radiallyarranged molds located equal distances apart in an annular path that is concentric with the axis of the wheel, and a plunger adapted to enter the molds at a given point and capable of revolving with the mold-wheel during its compressing stroke, a'vertically-tilting lever fulcrumed at a suitable elevation above and operatively connected with the plunger, a suitably-actuated upright shaft E intergeared with the mold-wheel, and cam mechanism upon said shaft for actuating the aforesaid tilting lever alternately in opposite directions, means for moving the plunger with the moldwheel during the compressing stroke of the plunger, and means for returning the plunger to the place of beginning after its compressing stroke, all arranged and timed to operate substantially as shown, for the purpose specified.

' 12. In a brick-machine, the combination of a suitably-actuated revolving mold having a vertically-movable bottom, a suitably-actuated plunger for entering the mold, said plunger being provided with a laterally-projecting lug Q, means for moving the plunger with the mold during the downward or compressing stroke of the plunger, means for elevating and returning the plunger to the place of beginning after its compressing stroke, means for elevating the bottom of the mold flush with the upper edges of the mold after the compression of the brick, a follower O for discharging the elevated brick from the mold, lever mechanism for operating the follower, said lever mechanism being adapted to be engaged and actuated by the aforesaid lug on the plunger during the upward stroke of the plunger, and means acting to retain the follower in its normal or inoperative position, all arranged and operating substantially as shown, for the purpose specified.

In testimony whereof I sign this specification, in the presence of two witnesses,this 16th day of July, 1895.

JOHN N. KAUFHOLZ.

Vitnesses:

O. H. DORER, L. \VARD HOOVER. 

